        //===============================================================================
        // This file is based on the Microsoft Data Access Application Block for .NET
        // For more information please go to 
        // http://msdn.microsoft.com/library/en-us/dnbda/html/daab-rm.asp
        //===============================================================================

        using System;
        using System.Configuration;
        using System.Data;
        using System.Data.SqlClient;
        using System.Collections;
        //using PetShop.Utility;

        namespace LicPdaService
        {

	        /// <summary>
	        /// The SqlHelper class is intended to encapsulate high performance, 
	        /// scalable best practices for common uses of SqlClient.
	        /// </summary>
        public abstract class SQLHelper 
        {
		
		        //Database connection strings
        //public static readonly string CONN_STRING_NON_DTC = ConnectionInfo.DecryptDBConnectionString(ConfigurationSettings.AppSettings["SQLconnstring21"]);
        //public static readonly string CONN_STRING_DTC_INV = ConnectionInfo.DecryptDBConnectionString(ConfigurationSettings.AppSettings["SQLconnstring2"]);		
        //public static readonly string CONN_STRING_DTC_ORDERS = ConnectionInfo.DecryptDBConnectionString(ConfigurationSettings.AppSettings["SQLconnstring23"]);
		
		        // Hashtable to store cached parameters
        private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());

		        /// <summary>
		        /// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  int result = ExecuteNonQuery(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="connectionString">a valid connection string for a SqlConnection</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(string connstring2, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {

        SqlCommand cmd = new SqlCommand();

        using (SqlConnection conn = new SqlConnection(connstring2)) 
        {
        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
        int val = cmd.ExecuteNonQuery();
        cmd.Parameters.Clear();
	        conn.Close ();
        return val;
	
        }
        }

		        /// <summary>
		        /// Execute a SqlCommand (that returns no resultset) against an existing database connection 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  int result = ExecuteNonQuery(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="conn">an existing database connection</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(SqlConnection conn, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {

        SqlCommand cmd = new SqlCommand();
        cmd.CommandTimeout = 0;
        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
        int val = cmd.ExecuteNonQuery();
        cmd.Parameters.Clear();
	        conn.Close ();
        return val;

        }

		        /// <summary>
		        /// Execute a SqlCommand (that returns no resultset) using an existing SQL Transaction 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  int result = ExecuteNonQuery(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="trans">an existing sql transaction</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(SqlTransaction trans, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {
        SqlCommand cmd = new SqlCommand();
        PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, cmdParms);
        int val = cmd.ExecuteNonQuery();
        cmd.Parameters.Clear();
	
        return val;

        }

		        /// <summary>
		        /// Execute a SqlCommand that returns a resultset against the database specified in the connection string 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  SqlDataReader r = ExecuteReader(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="connectionString">a valid connection string for a SqlConnection</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>A SqlDataReader containing the results</returns>
        public static SqlDataReader ExecuteReader(string connstring2, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {
        SqlCommand cmd = new SqlCommand();
        SqlConnection conn = new SqlConnection(connstring2);

			        // we use a try/catch here because if the method throws an exception we want to 
			        // close the connection throw code, because no datareader will exist, hence the 
			        // commandBehaviour.CloseConnection will not work
        try 
        {
        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
        SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
        cmd.Parameters.Clear();
        return rdr;
        }
        catch 
        {
        conn.Close();
        throw;
        }
        }
		

	        public static  DataSet ExecuteDataSet(string connstring2, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
	        {
		        SqlCommand cmd = new SqlCommand();
		        SqlConnection conn = new SqlConnection(connstring2);
                cmd.CommandTimeout = 180;
		        // we use a try/catch here because if the method throws an exception we want to 
		        // close the connection throw code, because no datareader will exist, hence the 
		        // commandBehaviour.CloseConnection will not work
		        try 
		        {
			        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
			        SqlDataAdapter ad=new SqlDataAdapter ();
			        ad.SelectCommand =cmd;
			        DataSet ds=new DataSet () ;
			        ad.Fill (ds);
			        cmd.Parameters.Clear();
			        return ds;
		        }
		        catch 
		        {
			        conn.Close();
			        throw;
		        }
		        finally
		        {
			        conn.Close ();
		        }
	        }
		        /// <summary>
		        /// Execute a SqlCommand that returns the first column of the first record against the database specified in the connection string 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  Object obj = ExecuteScalar(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="connectionString">a valid connection string for a SqlConnection</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
        public static object ExecuteScalar(string connstring2, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {
        SqlCommand cmd = new SqlCommand();

        using (SqlConnection conn = new SqlConnection(connstring2)) 
        {
        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
        object val = cmd.ExecuteScalar();
        cmd.Parameters.Clear();
        return val;
        }
        }

		        /// <summary>
		        /// Execute a SqlCommand that returns the first column of the first record against an existing database connection 
		        /// using the provided parameters.
		        /// </summary>
		        /// <remarks>
		        /// e.g.:  
		        ///  Object obj = ExecuteScalar(connstring2, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
		        /// </remarks>
		        /// <param name="conn">an existing database connection</param>
		        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
		        /// <param name="commandText">the stored procedure name or T-SQL command</param>
		        /// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
		        /// <returns>An object that should be converted to the expected type using Convert.To{Type}</returns>
        public static object ExecuteScalar(SqlConnection conn, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms) 
        {
			
        SqlCommand cmd = new SqlCommand();

        PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
        object val = cmd.ExecuteScalar();
        cmd.Parameters.Clear();
        return val;
        }

		        /// <summary>
		        /// add parameter array to the cache
		        /// </summary>
		        /// <param name="cacheKey">Key to the parameter cache</param>
		        /// <param name="cmdParms">an array of SqlParamters to be cached</param>
        public static void CacheParameters(string cacheKey, params SqlParameter[] cmdParms) 
        {
        parmCache[cacheKey] = cmdParms;
        }

		        /// <summary>
		        /// Retrieve cached parameters
		        /// </summary>
		        /// <param name="cacheKey">key used to lookup parameters</param>
		        /// <returns>Cached SqlParamters array</returns>
        public static SqlParameter[] GetCachedParameters(string cacheKey) 
        {
        SqlParameter[] cachedParms = (SqlParameter[])parmCache[cacheKey];
			
        if (cachedParms == null)
        return null;
			
        SqlParameter[] clonedParms = new SqlParameter[cachedParms.Length];

        for (int i = 0, j = cachedParms.Length; i < j; i++)
        clonedParms[i] = (SqlParameter)((ICloneable)cachedParms[i]).Clone();

        return clonedParms;
        }

		        /// <summary>
		        /// Prepare a command for execution
		        /// </summary>
		        /// <param name="cmd">SqlCommand object</param>
		        /// <param name="conn">SqlConnection object</param>
		        /// <param name="trans">SqlTransaction object</param>
		        /// <param name="cmdType">Cmd type e.g. stored procedure or text</param>
		        /// <param name="cmdText">Command text, e.g. Select * from Products</param>
		        /// <param name="cmdParms">SqlParameters to use in the command</param>
        private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms) 
        {

        if (conn.State != ConnectionState.Open)
        conn.Open();

        cmd.Connection = conn;
        cmd.CommandText = cmdText;

        if (trans != null)
        cmd.Transaction = trans;

        cmd.CommandType = cmdType;

        if (cmdParms != null) 
        {
        foreach (SqlParameter parm in cmdParms)
        cmd.Parameters.Add(parm);
        }
        }

        public static DataTable GetDataTable(string connectionString, string strSQL, string name)
        {
            return Query(connectionString, strSQL, name).Tables[0];
        }

        public static DataSet Query(string connectionString, string SQLString, string name)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                    command.Fill(ds, name);
                }
                catch (Exception e)
                {
                    //Lic.Public.PublicMethod.WriteLog(ConfigWeb.LicErrorLog, SQLString + "; " + e.Message);
                    //ErrMessage = e.Message.ToString(); ;
                }
                finally
                {
                    connection.Close();
                }
                return ds;
            }
        }
    }
   }
